You can lynch the confirmed any time you want. If I receive adrenaline the night I unburrow, it will be the only time I can be nightkilled. Since confirmed town is also most likely getting Guardian Angel protection this round (if there are any), it's much safer to NK them a night later while rendered immune.
Combine these two and I don't like my chances of survival if I commit to evolve. So nothing anyone says will change my plan.
A problem with that (Having torb unburrow) is you assume he evolved last night, if he hasn't evolved yet and he does so tonight he will still be burrowed, right?
Shriekers start unburrowed on evolve afaik.